Stub runner boot not working in windows

[javierminoglb]

Describe the bug Please provide details of the problem, including the version of Spring Cloud that you are using. If you run the stub runner boot application with a path that contains a windows file separator you get a URISyntaxException

Sample If possible, please provide a test case or sample application that reproduces the problem. This makes it much easier for us to diagnose the problem and to verify that we have fixed it.

To reproduce download the dependency to your local maven repo:

/mvnw dependency:get -Dartifact=org.springframework.cloud:spring-cloud-contract-stub-runner-boot:3.0.4:jar

Run the stub runner with a windows file separator in the repository url:

java -jar ~/.m2/repository/org/springframework/cloud/spring-cloud-contract-stub-runner-boot/3.0.4/spring-cloud-contract-stub-runner-boot-3.0.4.jar --stubrunner.ids=com.example:demo --stubrunner.stubsMode=remote --stubrunner.cloud.stubbed.discovery.enabled=false --stubrunner.idsToServiceIds.demo=demo --stubrunner.generate-stubs=true --stubrunner.repositoryRoot="stubs://file:..\stubs"